Wireless Communicator Signal Strength Display Continuity
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Solution Overview
Problem
Existing wireless communicators with signal strength meters and AGC circuits face issues in maintaining continuous signal strength display when the signal strength changes across different regions of AGC and S meter voltage, leading to an incongruous visualization experience.
Innovation Solution
Incorporating an AGC circuit that performs switching between AGC signal strength and expanded signal strength values, with the AGC circuit controlling the amplitude of the received signal and outputting these values to the signal strength meter based on predetermined conditions, ensuring continuous and smooth display of signal strength even when the signal extends across different regions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the electric field intensity detection circuit uses an electric field intensity table associated with AGC voltages and S meter voltages to output received electric field intensity, then the signal strength can be displayed, but the continuousness of the display cannot be maintained when the signal strength extends over the regions of the AGC voltage and the S meter voltage, causing a sense of incongruity
Solution Approach 1:
The patent applies dynamics by making the signal strength display adaptable and variable based on operating conditions. The S meter display dynamically switches between two different calculation methods: using AGC voltage for stronger signals and using a separate voltage divider circuit for weaker signals. This dynamic adaptation ensures continuous and smooth display across the entire signal strength range without incongruity.
Solution Approach 2:
The patent changes the parameter used for signal strength display based on the signal level. For stronger signals, the AGC voltage parameter is used to drive the S meter. For weaker signals, the system switches to using a voltage obtained through a separate voltage divider circuit. This parameter change ensures that the display remains continuous and accurate across different signal strength regions.
2Stability of the object's composition
If the AGC control is applied to control the amplitude of the received signal, then the signal amplitude can be maintained in a predetermined range, but the original signal strength information is lost when the signal strength exceeds the AGC operation threshold
Solution Approach 1:
The patent segments the signal strength measurement function into two separate circuits: the AGC circuit for maintaining amplitude stability and a separate voltage divider circuit for measuring original signal strength. By dividing the measurement function, the system can simultaneously maintain signal stability through AGC control while preserving original signal strength information through the separate measurement path, preventing information loss.
Solution Approach 2:
The patent introduces an intermediary voltage divider circuit that creates a separate measurement path for signal strength. This intermediary circuit taps into the received signal before AGC processing and provides a parallel measurement path, allowing the system to both control amplitude stability through AGC and preserve original signal strength information through the intermediary measurement circuit.
Data Source
AI summary
A wireless communicator includes: a signal strength meter configured to display a signal strength of a received signal; and an AGC circuit configured to perform AGC control for controlling an amplitude of the received signal be in a predetermined range, wherein the AGC circuit is further configured to perform switching, based on a predetermined condition, between two values to provide the switched value to the signal strength meter, one of the values being an AGC signal strength value for displaying the signal strength based on the AGC control, and another of the values being an expanded signal strength value for displaying the signal strength for which the AGC control is not operated based on a value obtained by detecting the received signal.